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make cache size configurable

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This commit is contained in:
mqliang
2016-02-24 20:19:30 +08:00
parent d9a35a25d7
commit e44e71ca87
14 changed files with 846 additions and 751 deletions
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2
pkg/controller/lookup_cache.go
View File

@@ -25,8 +25,6 @@ import (
hashutil "k8s.io/kubernetes/pkg/util/hash"
)
const DefaultCacheEntries = 4096
type objectWithMeta interface {
meta.Object
}

4
pkg/controller/replicaset/replica_set.go
View File

@@ -95,7 +95,7 @@ type ReplicaSetController struct {
}
// NewReplicaSetController creates a new ReplicaSetController.
func NewReplicaSetController(kubeClient clientset.Interface, resyncPeriod controller.ResyncPeriodFunc, burstReplicas int) *ReplicaSetController {
func NewReplicaSetController(kubeClient clientset.Interface, resyncPeriod controller.ResyncPeriodFunc, burstReplicas int, lookupCacheSize int) *ReplicaSetController {
eventBroadcaster := record.NewBroadcaster()
eventBroadcaster.StartLogging(glog.Infof)
eventBroadcaster.StartRecordingToSink(&unversionedcore.EventSinkImpl{kubeClient.Core().Events("")})
@@ -191,7 +191,7 @@ func NewReplicaSetController(kubeClient clientset.Interface, resyncPeriod contro
rsc.syncHandler = rsc.syncReplicaSet
rsc.podStoreSynced = rsc.podController.HasSynced
rsc.lookupCache = controller.NewMatchingCache(controller.DefaultCacheEntries)
rsc.lookupCache = controller.NewMatchingCache(lookupCacheSize)
return rsc
}

34
pkg/controller/replicaset/replica_set_test.go
View File

@@ -139,7 +139,7 @@ type serverResponse struct {
func TestSyncReplicaSetDoesNothing(t *testing.T) {
client := clientset.NewForConfigOrDie(&client.Config{Host: "", ContentConfig: client.ContentConfig{GroupVersion: testapi.Default.GroupVersion()}})
fakePodControl := controller.FakePodControl{}
manager := NewReplicaSetController(client, controller.NoResyncPeriodFunc, BurstReplicas)
manager := NewReplicaSetController(client, controller.NoResyncPeriodFunc, BurstReplicas, 0)
manager.podStoreSynced = alwaysReady
// 2 running pods, a controller with 2 replicas, sync is a no-op
@@ -156,7 +156,7 @@ func TestSyncReplicaSetDoesNothing(t *testing.T) {
func TestSyncReplicaSetDeletes(t *testing.T) {
client := clientset.NewForConfigOrDie(&client.Config{Host: "", ContentConfig: client.ContentConfig{GroupVersion: testapi.Default.GroupVersion()}})
fakePodControl := controller.FakePodControl{}
manager := NewReplicaSetController(client, controller.NoResyncPeriodFunc, BurstReplicas)
manager := NewReplicaSetController(client, controller.NoResyncPeriodFunc, BurstReplicas, 0)
manager.podStoreSynced = alwaysReady
manager.podControl = &fakePodControl
@@ -173,7 +173,7 @@ func TestSyncReplicaSetDeletes(t *testing.T) {
func TestDeleteFinalStateUnknown(t *testing.T) {
client := clientset.NewForConfigOrDie(&client.Config{Host: "", ContentConfig: client.ContentConfig{GroupVersion: testapi.Default.GroupVersion()}})
fakePodControl := controller.FakePodControl{}
manager := NewReplicaSetController(client, controller.NoResyncPeriodFunc, BurstReplicas)
manager := NewReplicaSetController(client, controller.NoResyncPeriodFunc, BurstReplicas, 0)
manager.podStoreSynced = alwaysReady
manager.podControl = &fakePodControl
@@ -206,7 +206,7 @@ func TestDeleteFinalStateUnknown(t *testing.T) {
func TestSyncReplicaSetCreates(t *testing.T) {
client := clientset.NewForConfigOrDie(&client.Config{Host: "", ContentConfig: client.ContentConfig{GroupVersion: testapi.Default.GroupVersion()}})
manager := NewReplicaSetController(client, controller.NoResyncPeriodFunc, BurstReplicas)
manager := NewReplicaSetController(client, controller.NoResyncPeriodFunc, BurstReplicas, 0)
manager.podStoreSynced = alwaysReady
// A controller with 2 replicas and no pods in the store, 2 creates expected
@@ -229,7 +229,7 @@ func TestStatusUpdatesWithoutReplicasChange(t *testing.T) {
testServer := httptest.NewServer(&fakeHandler)
defer testServer.Close()
client := clientset.NewForConfigOrDie(&client.Config{Host: testServer.URL, ContentConfig: client.ContentConfig{GroupVersion: testapi.Default.GroupVersion()}})
manager := NewReplicaSetController(client, controller.NoResyncPeriodFunc, BurstReplicas)
manager := NewReplicaSetController(client, controller.NoResyncPeriodFunc, BurstReplicas, 0)
manager.podStoreSynced = alwaysReady
// Steady state for the ReplicaSet, no Status.Replicas updates expected
@@ -272,7 +272,7 @@ func TestControllerUpdateReplicas(t *testing.T) {
defer testServer.Close()
client := clientset.NewForConfigOrDie(&client.Config{Host: testServer.URL, ContentConfig: client.ContentConfig{GroupVersion: testapi.Default.GroupVersion()}})
manager := NewReplicaSetController(client, controller.NoResyncPeriodFunc, BurstReplicas)
manager := NewReplicaSetController(client, controller.NoResyncPeriodFunc, BurstReplicas, 0)
manager.podStoreSynced = alwaysReady
// Insufficient number of pods in the system, and Status.Replicas is wrong;
@@ -313,7 +313,7 @@ func TestSyncReplicaSetDormancy(t *testing.T) {
client := clientset.NewForConfigOrDie(&client.Config{Host: testServer.URL, ContentConfig: client.ContentConfig{GroupVersion: testapi.Default.GroupVersion()}})
fakePodControl := controller.FakePodControl{}
manager := NewReplicaSetController(client, controller.NoResyncPeriodFunc, BurstReplicas)
manager := NewReplicaSetController(client, controller.NoResyncPeriodFunc, BurstReplicas, 0)
manager.podStoreSynced = alwaysReady
manager.podControl = &fakePodControl
@@ -360,7 +360,7 @@ func TestSyncReplicaSetDormancy(t *testing.T) {
}
func TestPodControllerLookup(t *testing.T) {
manager := NewReplicaSetController(clientset.NewForConfigOrDie(&client.Config{Host: "", ContentConfig: client.ContentConfig{GroupVersion: testapi.Default.GroupVersion()}}), controller.NoResyncPeriodFunc, BurstReplicas)
manager := NewReplicaSetController(clientset.NewForConfigOrDie(&client.Config{Host: "", ContentConfig: client.ContentConfig{GroupVersion: testapi.Default.GroupVersion()}}), controller.NoResyncPeriodFunc, BurstReplicas, 0)
manager.podStoreSynced = alwaysReady
testCases := []struct {
inRSs []*extensions.ReplicaSet
@@ -428,7 +428,7 @@ func TestWatchControllers(t *testing.T) {
fakeWatch := watch.NewFake()
client := &fake.Clientset{}
client.AddWatchReactor("*", core.DefaultWatchReactor(fakeWatch, nil))
manager := NewReplicaSetController(client, controller.NoResyncPeriodFunc, BurstReplicas)
manager := NewReplicaSetController(client, controller.NoResyncPeriodFunc, BurstReplicas, 0)
manager.podStoreSynced = alwaysReady
var testRSSpec extensions.ReplicaSet
@@ -471,7 +471,7 @@ func TestWatchPods(t *testing.T) {
fakeWatch := watch.NewFake()
client := &fake.Clientset{}
client.AddWatchReactor("*", core.DefaultWatchReactor(fakeWatch, nil))
manager := NewReplicaSetController(client, controller.NoResyncPeriodFunc, BurstReplicas)
manager := NewReplicaSetController(client, controller.NoResyncPeriodFunc, BurstReplicas, 0)
manager.podStoreSynced = alwaysReady
// Put one ReplicaSet and one pod into the controller's stores
@@ -514,7 +514,7 @@ func TestWatchPods(t *testing.T) {
}
func TestUpdatePods(t *testing.T) {
manager := NewReplicaSetController(fake.NewSimpleClientset(), controller.NoResyncPeriodFunc, BurstReplicas)
manager := NewReplicaSetController(fake.NewSimpleClientset(), controller.NoResyncPeriodFunc, BurstReplicas, 0)
manager.podStoreSynced = alwaysReady
received := make(chan string)
@@ -575,7 +575,7 @@ func TestControllerUpdateRequeue(t *testing.T) {
defer testServer.Close()
client := clientset.NewForConfigOrDie(&client.Config{Host: testServer.URL, ContentConfig: client.ContentConfig{GroupVersion: testapi.Default.GroupVersion()}})
manager := NewReplicaSetController(client, controller.NoResyncPeriodFunc, BurstReplicas)
manager := NewReplicaSetController(client, controller.NoResyncPeriodFunc, BurstReplicas, 0)
manager.podStoreSynced = alwaysReady
labelMap := map[string]string{"foo": "bar"}
@@ -655,7 +655,7 @@ func TestControllerUpdateStatusWithFailure(t *testing.T) {
func doTestControllerBurstReplicas(t *testing.T, burstReplicas, numReplicas int) {
client := clientset.NewForConfigOrDie(&client.Config{Host: "", ContentConfig: client.ContentConfig{GroupVersion: testapi.Default.GroupVersion()}})
fakePodControl := controller.FakePodControl{}
manager := NewReplicaSetController(client, controller.NoResyncPeriodFunc, burstReplicas)
manager := NewReplicaSetController(client, controller.NoResyncPeriodFunc, burstReplicas, 0)
manager.podStoreSynced = alwaysReady
manager.podControl = &fakePodControl
@@ -777,7 +777,7 @@ func (fe FakeRSExpectations) SatisfiedExpectations(controllerKey string) bool {
func TestRSSyncExpectations(t *testing.T) {
client := clientset.NewForConfigOrDie(&client.Config{Host: "", ContentConfig: client.ContentConfig{GroupVersion: testapi.Default.GroupVersion()}})
fakePodControl := controller.FakePodControl{}
manager := NewReplicaSetController(client, controller.NoResyncPeriodFunc, 2)
manager := NewReplicaSetController(client, controller.NoResyncPeriodFunc, 2, 0)
manager.podStoreSynced = alwaysReady
manager.podControl = &fakePodControl
@@ -802,7 +802,7 @@ func TestRSSyncExpectations(t *testing.T) {
func TestDeleteControllerAndExpectations(t *testing.T) {
client := clientset.NewForConfigOrDie(&client.Config{Host: "", ContentConfig: client.ContentConfig{GroupVersion: testapi.Default.GroupVersion()}})
manager := NewReplicaSetController(client, controller.NoResyncPeriodFunc, 10)
manager := NewReplicaSetController(client, controller.NoResyncPeriodFunc, 10, 0)
manager.podStoreSynced = alwaysReady
rs := newReplicaSet(1, map[string]string{"foo": "bar"})
@@ -845,7 +845,7 @@ func TestDeleteControllerAndExpectations(t *testing.T) {
func TestRSManagerNotReady(t *testing.T) {
client := clientset.NewForConfigOrDie(&client.Config{Host: "", ContentConfig: client.ContentConfig{GroupVersion: testapi.Default.GroupVersion()}})
fakePodControl := controller.FakePodControl{}
manager := NewReplicaSetController(client, controller.NoResyncPeriodFunc, 2)
manager := NewReplicaSetController(client, controller.NoResyncPeriodFunc, 2, 0)
manager.podControl = &fakePodControl
manager.podStoreSynced = func() bool { return false }
@@ -884,7 +884,7 @@ func TestOverlappingRSs(t *testing.T) {
labelMap := map[string]string{"foo": "bar"}
for i := 0; i < 5; i++ {
manager := NewReplicaSetController(client, controller.NoResyncPeriodFunc, 10)
manager := NewReplicaSetController(client, controller.NoResyncPeriodFunc, 10, 0)
manager.podStoreSynced = alwaysReady
// Create 10 ReplicaSets, shuffled them randomly and insert them into the ReplicaSet controller's store

4
pkg/controller/replication/replication_controller.go
View File

@@ -94,7 +94,7 @@ type ReplicationManager struct {
}
// NewReplicationManager creates a new ReplicationManager.
func NewReplicationManager(kubeClient clientset.Interface, resyncPeriod controller.ResyncPeriodFunc, burstReplicas int) *ReplicationManager {
func NewReplicationManager(kubeClient clientset.Interface, resyncPeriod controller.ResyncPeriodFunc, burstReplicas int, lookupCacheSize int) *ReplicationManager {
eventBroadcaster := record.NewBroadcaster()
eventBroadcaster.StartLogging(glog.Infof)
eventBroadcaster.StartRecordingToSink(&unversionedcore.EventSinkImpl{kubeClient.Core().Events("")})
@@ -190,7 +190,7 @@ func NewReplicationManager(kubeClient clientset.Interface, resyncPeriod controll
rm.syncHandler = rm.syncReplicationController
rm.podStoreSynced = rm.podController.HasSynced
rm.lookupCache = controller.NewMatchingCache(controller.DefaultCacheEntries)
rm.lookupCache = controller.NewMatchingCache(lookupCacheSize)
return rm
}

38
pkg/controller/replication/replication_controller_test.go
View File

@@ -137,7 +137,7 @@ type serverResponse struct {
func TestSyncReplicationControllerDoesNothing(t *testing.T) {
c := clientset.NewForConfigOrDie(&client.Config{Host: "", ContentConfig: client.ContentConfig{GroupVersion: testapi.Default.GroupVersion()}})
fakePodControl := controller.FakePodControl{}
manager := NewReplicationManager(c, controller.NoResyncPeriodFunc, BurstReplicas)
manager := NewReplicationManager(c, controller.NoResyncPeriodFunc, BurstReplicas, 0)
manager.podStoreSynced = alwaysReady
// 2 running pods, a controller with 2 replicas, sync is a no-op
@@ -153,7 +153,7 @@ func TestSyncReplicationControllerDoesNothing(t *testing.T) {
func TestSyncReplicationControllerDeletes(t *testing.T) {
c := clientset.NewForConfigOrDie(&client.Config{Host: "", ContentConfig: client.ContentConfig{GroupVersion: testapi.Default.GroupVersion()}})
fakePodControl := controller.FakePodControl{}
manager := NewReplicationManager(c, controller.NoResyncPeriodFunc, BurstReplicas)
manager := NewReplicationManager(c, controller.NoResyncPeriodFunc, BurstReplicas, 0)
manager.podStoreSynced = alwaysReady
manager.podControl = &fakePodControl
@@ -169,7 +169,7 @@ func TestSyncReplicationControllerDeletes(t *testing.T) {
func TestDeleteFinalStateUnknown(t *testing.T) {
c := clientset.NewForConfigOrDie(&client.Config{Host: "", ContentConfig: client.ContentConfig{GroupVersion: testapi.Default.GroupVersion()}})
fakePodControl := controller.FakePodControl{}
manager := NewReplicationManager(c, controller.NoResyncPeriodFunc, BurstReplicas)
manager := NewReplicationManager(c, controller.NoResyncPeriodFunc, BurstReplicas, 0)
manager.podStoreSynced = alwaysReady
manager.podControl = &fakePodControl
@@ -201,7 +201,7 @@ func TestDeleteFinalStateUnknown(t *testing.T) {
func TestSyncReplicationControllerCreates(t *testing.T) {
c := clientset.NewForConfigOrDie(&client.Config{Host: "", ContentConfig: client.ContentConfig{GroupVersion: testapi.Default.GroupVersion()}})
manager := NewReplicationManager(c, controller.NoResyncPeriodFunc, BurstReplicas)
manager := NewReplicationManager(c, controller.NoResyncPeriodFunc, BurstReplicas, 0)
manager.podStoreSynced = alwaysReady
// A controller with 2 replicas and no pods in the store, 2 creates expected
@@ -224,7 +224,7 @@ func TestStatusUpdatesWithoutReplicasChange(t *testing.T) {
// TODO: Uncomment when fix #19254
// defer testServer.Close()
c := clientset.NewForConfigOrDie(&client.Config{Host: testServer.URL, ContentConfig: client.ContentConfig{GroupVersion: testapi.Default.GroupVersion()}})
manager := NewReplicationManager(c, controller.NoResyncPeriodFunc, BurstReplicas)
manager := NewReplicationManager(c, controller.NoResyncPeriodFunc, BurstReplicas, 0)
manager.podStoreSynced = alwaysReady
// Steady state for the replication controller, no Status.Replicas updates expected
@@ -266,7 +266,7 @@ func TestControllerUpdateReplicas(t *testing.T) {
// TODO: Uncomment when fix #19254
// defer testServer.Close()
c := clientset.NewForConfigOrDie(&client.Config{Host: testServer.URL, ContentConfig: client.ContentConfig{GroupVersion: testapi.Default.GroupVersion()}})
manager := NewReplicationManager(c, controller.NoResyncPeriodFunc, BurstReplicas)
manager := NewReplicationManager(c, controller.NoResyncPeriodFunc, BurstReplicas, 0)
manager.podStoreSynced = alwaysReady
// Insufficient number of pods in the system, and Status.Replicas is wrong;
@@ -306,7 +306,7 @@ func TestSyncReplicationControllerDormancy(t *testing.T) {
// defer testServer.Close()
c := clientset.NewForConfigOrDie(&client.Config{Host: testServer.URL, ContentConfig: client.ContentConfig{GroupVersion: testapi.Default.GroupVersion()}})
fakePodControl := controller.FakePodControl{}
manager := NewReplicationManager(c, controller.NoResyncPeriodFunc, BurstReplicas)
manager := NewReplicationManager(c, controller.NoResyncPeriodFunc, BurstReplicas, 0)
manager.podStoreSynced = alwaysReady
manager.podControl = &fakePodControl
@@ -352,7 +352,7 @@ func TestSyncReplicationControllerDormancy(t *testing.T) {
}
func TestPodControllerLookup(t *testing.T) {
manager := NewReplicationManager(clientset.NewForConfigOrDie(&client.Config{Host: "", ContentConfig: client.ContentConfig{GroupVersion: testapi.Default.GroupVersion()}}), controller.NoResyncPeriodFunc, BurstReplicas)
manager := NewReplicationManager(clientset.NewForConfigOrDie(&client.Config{Host: "", ContentConfig: client.ContentConfig{GroupVersion: testapi.Default.GroupVersion()}}), controller.NoResyncPeriodFunc, BurstReplicas, 0)
manager.podStoreSynced = alwaysReady
testCases := []struct {
inRCs []*api.ReplicationController
@@ -415,7 +415,7 @@ func TestWatchControllers(t *testing.T) {
fakeWatch := watch.NewFake()
c := &fake.Clientset{}
c.AddWatchReactor("*", core.DefaultWatchReactor(fakeWatch, nil))
manager := NewReplicationManager(c, controller.NoResyncPeriodFunc, BurstReplicas)
manager := NewReplicationManager(c, controller.NoResyncPeriodFunc, BurstReplicas, 0)
manager.podStoreSynced = alwaysReady
var testControllerSpec api.ReplicationController
@@ -458,7 +458,7 @@ func TestWatchPods(t *testing.T) {
fakeWatch := watch.NewFake()
c := &fake.Clientset{}
c.AddWatchReactor("*", core.DefaultWatchReactor(fakeWatch, nil))
manager := NewReplicationManager(c, controller.NoResyncPeriodFunc, BurstReplicas)
manager := NewReplicationManager(c, controller.NoResyncPeriodFunc, BurstReplicas, 0)
manager.podStoreSynced = alwaysReady
// Put one rc and one pod into the controller's stores
@@ -500,7 +500,7 @@ func TestWatchPods(t *testing.T) {
}
func TestUpdatePods(t *testing.T) {
manager := NewReplicationManager(fake.NewSimpleClientset(), controller.NoResyncPeriodFunc, BurstReplicas)
manager := NewReplicationManager(fake.NewSimpleClientset(), controller.NoResyncPeriodFunc, BurstReplicas, 0)
manager.podStoreSynced = alwaysReady
received := make(chan string)
@@ -560,7 +560,7 @@ func TestControllerUpdateRequeue(t *testing.T) {
// defer testServer.Close()
c := clientset.NewForConfigOrDie(&client.Config{Host: testServer.URL, ContentConfig: client.ContentConfig{GroupVersion: testapi.Default.GroupVersion()}})
manager := NewReplicationManager(c, controller.NoResyncPeriodFunc, BurstReplicas)
manager := NewReplicationManager(c, controller.NoResyncPeriodFunc, BurstReplicas, 0)
manager.podStoreSynced = alwaysReady
rc := newReplicationController(1)
@@ -641,7 +641,7 @@ func TestControllerUpdateStatusWithFailure(t *testing.T) {
func doTestControllerBurstReplicas(t *testing.T, burstReplicas, numReplicas int) {
c := clientset.NewForConfigOrDie(&client.Config{Host: "", ContentConfig: client.ContentConfig{GroupVersion: testapi.Default.GroupVersion()}})
fakePodControl := controller.FakePodControl{}
manager := NewReplicationManager(c, controller.NoResyncPeriodFunc, burstReplicas)
manager := NewReplicationManager(c, controller.NoResyncPeriodFunc, burstReplicas, 0)
manager.podStoreSynced = alwaysReady
manager.podControl = &fakePodControl
@@ -761,7 +761,7 @@ func (fe FakeRCExpectations) SatisfiedExpectations(controllerKey string) bool {
func TestRCSyncExpectations(t *testing.T) {
c := clientset.NewForConfigOrDie(&client.Config{Host: "", ContentConfig: client.ContentConfig{GroupVersion: testapi.Default.GroupVersion()}})
fakePodControl := controller.FakePodControl{}
manager := NewReplicationManager(c, controller.NoResyncPeriodFunc, 2)
manager := NewReplicationManager(c, controller.NoResyncPeriodFunc, 2, 0)
manager.podStoreSynced = alwaysReady
manager.podControl = &fakePodControl
@@ -785,7 +785,7 @@ func TestRCSyncExpectations(t *testing.T) {
func TestDeleteControllerAndExpectations(t *testing.T) {
c := clientset.NewForConfigOrDie(&client.Config{Host: "", ContentConfig: client.ContentConfig{GroupVersion: testapi.Default.GroupVersion()}})
manager := NewReplicationManager(c, controller.NoResyncPeriodFunc, 10)
manager := NewReplicationManager(c, controller.NoResyncPeriodFunc, 10, 0)
manager.podStoreSynced = alwaysReady
rc := newReplicationController(1)
@@ -828,7 +828,7 @@ func TestDeleteControllerAndExpectations(t *testing.T) {
func TestRCManagerNotReady(t *testing.T) {
c := clientset.NewForConfigOrDie(&client.Config{Host: "", ContentConfig: client.ContentConfig{GroupVersion: testapi.Default.GroupVersion()}})
fakePodControl := controller.FakePodControl{}
manager := NewReplicationManager(c, controller.NoResyncPeriodFunc, 2)
manager := NewReplicationManager(c, controller.NoResyncPeriodFunc, 2, 0)
manager.podControl = &fakePodControl
manager.podStoreSynced = func() bool { return false }
@@ -866,7 +866,7 @@ func TestOverlappingRCs(t *testing.T) {
c := clientset.NewForConfigOrDie(&client.Config{Host: "", ContentConfig: client.ContentConfig{GroupVersion: testapi.Default.GroupVersion()}})
for i := 0; i < 5; i++ {
manager := NewReplicationManager(c, controller.NoResyncPeriodFunc, 10)
manager := NewReplicationManager(c, controller.NoResyncPeriodFunc, 10, 0)
manager.podStoreSynced = alwaysReady
// Create 10 rcs, shuffled them randomly and insert them into the rc manager's store
@@ -895,7 +895,7 @@ func TestOverlappingRCs(t *testing.T) {
func BenchmarkGetPodControllerMultiNS(b *testing.B) {
client := clientset.NewForConfigOrDie(&client.Config{Host: "", ContentConfig: client.ContentConfig{GroupVersion: testapi.Default.GroupVersion()}})
manager := NewReplicationManager(client, controller.NoResyncPeriodFunc, BurstReplicas)
manager := NewReplicationManager(client, controller.NoResyncPeriodFunc, BurstReplicas, 0)
const nsNum = 1000
@@ -941,7 +941,7 @@ func BenchmarkGetPodControllerMultiNS(b *testing.B) {
func BenchmarkGetPodControllerSingleNS(b *testing.B) {
client := clientset.NewForConfigOrDie(&client.Config{Host: "", ContentConfig: client.ContentConfig{GroupVersion: testapi.Default.GroupVersion()}})
manager := NewReplicationManager(client, controller.NoResyncPeriodFunc, BurstReplicas)
manager := NewReplicationManager(client, controller.NoResyncPeriodFunc, BurstReplicas, 0)
const rcNum = 1000
const replicaNum = 3